I’ve been thinking about this for days, and I just can’t get past the fact that they don’t explain how these watches have always-on color displays and reasonable battery life. Maybe I’m too skeptical, or too biased against Google and this sort of “we’ll do the OS, a bunch of OEMs will make various devices” model — but I just don’t believe this is anywhere near ready to ship as a practical product.

Update: Apparently the watch display is not always on. It goes off, and uses motion/gyro sensors to turn on when you move your wrist (and, I presume, turns on when you receive a new notification). We shall see how well that works. Even so I remain skeptical regarding battery life.